Destiny/Zero can take place ten years before the situations of Destiny/StayNight in the midst of what is known as one of the "Holy Grail Wars." I had not found F/SN prior to watching this anime, but because of the data dump of a primary episode I used to be rapidly http://cristianheasl.collectblogs.com/23745152/the-smart-trick-of-seasons-babylon-5-that-nobody-is-discussing